Dismantling a Hua Sheng F142 49cc 4 stroke engine

[G-Superior]

vegaspaddy thats what happens to me when i live me mate in the garage and go out to get something
last time i could only hear BROMMM BROMMM from miles away
can anyone guess what it was?
Yes it was my big old Kohler tractor engine that i had sitting on the workbench with out oil(it was having an oil change and the exhaust was not on thats why it was so loud!)
As soon as hear it i pedaled the cr@p out off myself and went as fast as posible to stop it. lucky i was that it didint ran for long and is got the good old style cast iron bore so there was no visible damage at all
G-Superior

 

[Sean.au]

Well 2nd rebuild run went further than other runs, about 5km, then same sound as before. Feels like she has lost a little power on hills.
A bit over rebuilding, but getting faster at it.

 

[vegaspaddy]

now i cant sleep tonight, that cog i will check tomorrow to see what it is made off. That cog is called the CAM in the manual, so i will pop the screws off tomorrow and check for you.

At least i can sleep now...

 

[Sean.au]

Thanks Vegaspaddy, bought some threadlock today and will do a rebuild tomorrow.

 

[vegaspaddy]

glad i checked,

its mostly plastic...whew glad i checked...the arrow on top is to realign the cam when rebuilding the engine. and you can see the cam shape on the reverse.

photos attached..

 

[G-Superior]

looks like it is made out of the same material as the briggs engines
my dads mate has a machine shop and he has tonnes of that material, will ask him next time that i go there
G-Superior

 

[Sean.au]

Thanks Vegaspaddy and G-Superior,
The Honda cam looks much better than the Huasheng, the plasic looks like it would slide more and that would reduce frictional wear.
Opened engine up last night, same problem a little more damage, but not bad, have attached pics. Need to use a thicker piece of steel, observe the piece that bent up higher is the one that busted, also wondering if I might try bending new lock piece up from sides as opposed to ends.

 

[vegaspaddy]

found those parts labeled in the honda manual

connecting rod cap http://www.motoredbikes.com/attachment.php?attachmentid=26059&d=1273702455

oil dipper http://www.motoredbikes.com/attachment.php?attachmentid=25974&d=1273355495

connecting rod bolts.

Just in case you want to try and order honda parts.

Did you try JB weld on that thing !!!!!!!

 

[Sean.au]

Thanks Vegaspaddy, good to know.
Got some Red Threadlock to use, which is the strongest I could find.

 

[Sean.au]

Made a new Oil Dipper last night, the Rod Cap is on last leg, have attached pics.
Over cheap **** from China